Legco president Tsang Yok-sing was wrong to put the brakes on a filibuster during a debate on a controversial election bill on Thursday, the High Court was told yesterday.
Martin Lee Chu-ming SC said there were established rules already in place to deal with such situations.
'There is no procedure for the president to apply the guillotine,' said Lee, who was representing lawmaker 'Long Hair' Leung Kwok-hung in his legal challenge against Tsang's action.
Benjamin Yu SC, for Tsang, argued against the court interfering, saying there should be a separation of powers.
By not interfering, the judiciary was actually 'enhancing the rule of law', he said.
'It is for Legco to keep its house in order, not the court.'
Mr Justice Johnson Lam Man-hon will give his ruling today.